Process of cutting metals with gaseous fuel



I UNITED" STATES JOHN" PATENT "oF1=lcs-.

HARRIS, ortaiz'nwoonbfim, lissmnon' roloAnBo-oxYeEN comrenv, or PITTSBURGH, PENNSYLVANIA, A CORPORATION or DELAWARE-.1 s

1 a rnocEssor cUrrINsIMn'rALswIrH Gaseous ruEL.,,

No Drawing can-imam or applicatilcin serial ITo."62, 44 2, filed November 19, 19 15.

, filed august I6, 1920-. Seria1-No.-403,839.

To'atl whom concern s Be it known that I, JOHN HAnRis, a ,c1t 1- zen of the United States, residing. at, Lake-' wood, 'inthe county of Cuyahoga and fState-i 'ofOhio, haveinvented a certain newfand the following. scription.

' This invention relates to a process-of. but, -ctin'g metals with'gaseousfueland has for its general object to enable the operation to be accomplished in a particularly eflic ent and economical manner.

- most generally known a'ndused for the, ur-

' pose of cutting metals with blowpipes.

of expense as-compared withnth'e of. I acetylenefor'th-is purpo ;v

In the practice ofmy mvention, I usev [hydrogen-as a-base and enrich the same by passing it through a suitable saturator co'ntaining a-lig'ht, volatile liquid hydrocarbon,

-ror. hydrocarbon derivative such as alcohol,

benzene or ether. vThe hydrogen will pref -which is nearly as cheap as'hydrogen, and? erably be contained in a tank or cyhnder under a" pressure of 1800 to 2000 lbs. per square inch, the tank being provided with a pressure-regulator whereby the hydrogen nay'be delivered tothesaturator under any desired pressureesay from to lbs.

per square inch.- The saturator may be of' I any; suitable type, such, for instance, 'gas the-use of the mixture "thus produced in a blow pipe for cutting purposes-J This apfl shown ,in my application No..62,442, filed November 19, 1915, and'which application discloses the preparation of hydrogen ,en-

riched with the vapor of a hydrocarbon" and plioation, therefore, 1s in some. respects a continuationfof thei aforesaidf earlier filed application.

Byv delivering the hydrogen through the- -saturator-, it [will issue from the lattercharged with a" sufficient proportion of hydrocarbon 1 or derivative thereof; so that, when mingled with substantially pure-oxy-f .gen and ignited -itwill produce visible cones within the preheating jets of cutting blow 1 As is ;well known, acetylene is the gas- Specification f Letters Patent. P tented Aug. 1'5 1 922;

This application:

Qpipes, thus enabling the operatorlto apply' the said jets to the work in a nannerto secure 11181111111111 efiiciency in cutting metal.

The gaseous fuel-which I- employ is not i only far cheaper than acetylene, but may be" employed for cutting" purposes where it is impracticable tocoin resS the hydrogen'in'to tanks, as it need be under a pressure merely suflicient to cause it; to' pa$ throligh the saturatorand thence to In carrying out my'prooe'ss a cutting'torch or blowpi'pe' is I supplied with ih'y'di'ogen charged-w1ththe vapor of the -volatile li uid hydrocarbon and'is'iningled' in 'sIuch'torc .or blowplp e' .w1th substantially pure oxygen,

thus producing" a pm-heating mixture. j v

This mixture is delivered through the pree heating slot or 'e'tsand ignited. The vapors,

mingled. with t e-hydrogen will impart suf- ,ficient' luminosity to the preheat1ng--cone or cones to enable the latter to be applied to the metal I in such manner as to sec'ure I rapid and eificientpreheating -thereof.- After the metal-has been preheated, oxygen will be directed upon the-part thus preheatthe metal in theusual edandwill cut manner.

the following:' p p I am enabled to .cut metal with a gas the "hydrogenfconstituent' whereof has hitherto been allowed to escapeqas waste in. ;plantswhere oxy 'gen, ismanufa'ctured' by, the

electrolytic process orby the alkali. process.

(6) I am enabled to out with. a gas having a hotter pr'eheatingfiame than hydrogen alone, resulting in a quicker preheating and a 'led to (a with a gas' which v Among :the advantages my' p'rocess are 0.

will produce a readily visible cutting flame i or cone the temperature .whereof is higher than thatlproduced by hydrogen.

(a?) I am enabled to 'cut with the heatin of a narrow zone of metal, and hence wit 1 a-less con'sum'ption of'gas and metal than,

is possible with the ordinaryprocess, em-

playing acetylene alone.

Having thus described my invention, what I claimi's:

. '1. The process of cutting metal which consists'in directing against-the same" one or more preheating-jets consisting each of an ignited mixture of substantiall pure oxygen With hydrogen charged with the vapor f a Volatile liquid hydrocarbon or hydrocarbon derivative, and directing against th metal thus preheated a jet or stream of substantially pure oxygen.

2. [he process of cutting metal which consistsin directing'against the same one or more preheating jets consisting each of an ignited mixture of substantially pure oxygen with a gas having a non-luminous flame and a fluid capable of imparting visibility to such flame, and directing against the Inetal thus preheated a et or stream of substan signature, I

JOHN HARRIS.

In testimony whereof, Ihereunto afliiz 

